US9363706B2 - Method, device and system for signal transmission - Google Patents

Method, device and system for signal transmission Download PDF

Info

Publication number
US9363706B2
US9363706B2 US13/671,283 US201213671283A US9363706B2 US 9363706 B2 US9363706 B2 US 9363706B2 US 201213671283 A US201213671283 A US 201213671283A US 9363706 B2 US9363706 B2 US 9363706B2
Authority
US
United States
Prior art keywords
cell
mode
signals
transmitted
cdm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US13/671,283
Other languages
English (en)
Other versions
US20130064204A1 (en
Inventor
Lixin Sun
Lei Wan
Lixia Xue
Xinrui FENG
Zheng Yu
Sha Ma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Assigned to HUAWEI TECHNOLOGIES CO., LTD. reassignment HUAWEI TECHNOLOGIES CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUN, LIXIN, FENG, XINRUI, MA, SHA, WAN, LEI, XUE, LIXIA, YU, ZHENG
Publication of US20130064204A1 publication Critical patent/US20130064204A1/en
Application granted granted Critical
Publication of US9363706B2 publication Critical patent/US9363706B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H04W28/048—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13098—Mobile subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13109—Initializing, personal profile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13292—Time division multiplexing, TDM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery

Definitions

  • the present invention relates to the field of communication technologies and, in particular, to a method, a device and a system for signal transmission.
  • low-power eNodeBs or transmitting/receiving nodes may be deployed in the coverage scope of a macro eNodeB (Macro eNodeB) in a homogenous network (homogeneous network) system to enhance hotspot area coverage, indoor blind spot coverage, and cell edge coverage of the macro eNodeB in the coverage scope of the macro eNodeB, and enhance the average throughput of the cell, edge throughput of the cell, and uplink/downlink spectrum usage of the cell.
  • macro eNodeB Micro eNodeB
  • homogenous network homogenous network
  • the low-power eNodeB (or user equipment served by the low-power eNodeB) and the macro eNodeB (or user equipment served by the macro eNodeB) may perform (complete or partial) spectrum multiplexing. Because the low-power eNodeB (or user equipment served by the low-power eNodeB) and the macro eNodeB (or user equipment served by the macro eNodeB) share the same carrier resource, common-channel (or common-frequency) interference exists between the low-power eNodeB (or user equipment served by the low-power eNodeB) and the macro eNodeB (or user equipment served by the macro eNodeB).
  • Interference may affect reliability of detection of the channels (including control channel and data channel) of the low-power eNodeB (or user equipment served by the low-power eNodeB) and the macro eNodeB (or user equipment served by the macro eNodeB).
  • the inter-cell interference caused by the frequency multiplexing is reduced or eliminated primarily through a frequency domain mitigation method or a time domain mitigation method.
  • the inventor of the present invention found that, in the prior art, at the time of spectrum multiplexing, the inter-cell interference is large when the frequency domain mitigation method is applied, and the system complexity is high when the time domain mitigation method is applied.
  • Embodiments of the present invention provide a method, a device and a system for signal transmission to reduce inter-cell interference and system complexity.
  • a selecting unit configured to select a multiplexing mode of signals to be transmitted by a cell according to interference strength experienced by the cell and/or interference strength experienced by a neighboring cell;
  • a notifying unit configured to notify a receiver of the multiplexing mode of the signals to be transmitted by the cell
  • a transmission unit configured to transmit the signals to be transmitted by the cell according to the multiplexing mode of the signals to be transmitted by the cell.
  • an obtaining unit configured to obtain a multiplexing mode of signals transmitted by a transmitter and to be transmitted by a cell
  • a receiving unit configured to receive the signals to be transmitted by the cell according to the multiplexing mode of the signals to be transmitted by the cell.
  • the multiplexing mode is selected adaptively according to the interference strength. Therefore, the inter-cell interference is reduced, the reliability of channel detection is improved, the system complexity is reduced, and the cost is lowered.
  • FIG. 1 is a schematic diagram of a signal transmission method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of negotiation between a cell and a neighboring cell as regards how to configure a resource area for signals transmitted in a CDM mode;
  • FIG. 3 is a schematic diagram of negotiation between a cell and a neighboring cell as regards how to configure another resource area for signals transmitted in a CDM mode;
  • FIG. 4 is a schematic diagram of negotiation between two macro cells and the Pico cells covered in the two macro cells as regards how to configure available code resources for signals transmitted in a CDM mode;
  • FIG. 5 is a schematic diagram of joint spread spectrum transmission performed by macro eNB 1 and macro eNB 2 for UE 1 in a CDM mode to transmit signals to be transmitted by a cell;
  • FIG. 6 is a schematic diagram of another signal transmission method according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a signal transmission device according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of another signal transmission device according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a signal transmission system according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a signal transmission method according to an embodiment of the present invention.
  • the method in this embodiment comprises:
  • Step 101 Select a multiplexing mode of signals to be transmitted by a cell according to interference strength experienced by the cell and/or interference strength experienced by a neighboring cell.
  • Step 104 Notify a receiver of the multiplexing mode of the signals to be transmitted by the cell.
  • Step 105 Transmit the signals to be transmitted by the cell according to the multiplexing mode of the signals to be transmitted by the cell.
  • the entity for performing this embodiment is a transmitter, for example, an eNodeB, or macro eNodeB, or relay node, or Pico eNodeB, or home eNodeB, or user equipment (UE).
  • a transmitter for example, an eNodeB, or macro eNodeB, or relay node, or Pico eNodeB, or home eNodeB, or user equipment (UE).
  • UE user equipment
  • the transmitter selects a multiplexing mode of signals to be transmitted by the cell according to interference strength experienced by the cell and/or interference strength experienced by the neighboring cell.
  • the multiplexing mode highly resistant against interference can be selected when the cell or the neighboring cell experiences strong interference
  • a multiplexing mode less resistant against interference can be selected when the cell or the neighboring cell experiences weak interference.
  • the transmitter needs to notify the receiver of the selected multiplexing mode so that the receiver can use a correct multiplexing mode to receive the signals to be transmitted by the cell.
  • the transmitter transmits the signals to the receiver in the selected multiplexing mode.
  • the interference strength experienced by the cell may be the strength of interference on physical resource of the cell, which is measured by the transmitter or receiver in the cell based on pilot measurement, and/or the strength of the interference on the physical resource of the cell, which is reported by the receiver;
  • the physical resource of the cell, or the physical resource may be time domain resources, or frequency domain resources, or a combination of the time domain resources and the frequency domain resources;
  • the physical resource of the cell may be the physical resource occupied by the signal transmitted on a single downlink, and/or the physical resource occupied by the signal transmitted on a single uplink, and/or the physical resource occupied by the signal transmitted on multiple downlinks, and/or the physical resource occupied by the signal transmitted on multiple uplinks.
  • the cell determines the neighboring cell according to the measured neighboring cell signal, and/or information reported by the user equipment, and/or the network setting information; the neighboring cell may be a single cell, or a set of multiple cells; the interference strength experienced by the neighboring cell may be defined in a similar way as the interference strength experienced by the cell, and the definition is not detailed here any further.
  • the information on the interference strength experienced by the cell or the neighboring cell, or the interference strength identifier information may be transmitted or exchanged between the cell and the neighboring cell through an X2 interface or a wireless air interface.
  • the signals to be transmitted by the cell in this embodiment refer to signals to be transmitted in the coverage scope of the cell; the signals to be transmitted may be signals to be transmitted on a single downlink, and/or signals to be transmitted on a single uplink, and/or signals to be transmitted on multiple downlinks, and/or signals to be transmitted on multiple uplinks.
  • the step of selecting a multiplexing mode of signals to be transmitted by the cell according to interference strength experienced by the cell and/or interference strength experienced by the neighboring cell may comprise:
  • a code division multiplexing (CDM) mode is selected for the signals to be transmitted by the cell; otherwise, a second multiplexing mode is selected for the signals to be transmitted by the cell.
  • the second multiplexing mode is an orthogonal frequency division multiplexing (OFDM) mode, or a single carrier frequency division multiple access (SC-FDMA) mode, or a frequency division multiplexing (FDM) mode, or a time division multiplexing (TDM) mode.
  • the first threshold may be determined according to the interference strength experienced by the cell and/or the interference strength experienced by the neighboring cell, and/or the transmission performance of signals transmitted by the cell, and/or required service type of the signals to be transmitted by the cell.
  • the interference strength experienced by the cell and/or the interference strength experienced by the neighboring cell is greater than or equal to the first threshold, it is deemed that the interference strength is high, and the CDM mode highly resistant against interference is preferred; if the interference strength experienced by the cell and/or the interference strength experienced by the neighboring cell is less than the first threshold, it is deemed that the interference strength is low, and the second multiplexing mode less resistant against interference is preferred.
  • a receiver UEa served by a transmitter a applies an SC-FDMA mode for the uplink PUSCH transmission
  • the transmitter a configures a CDM mode for the UEa to perform PUSCH transmission; if the strongly interfering signals experienced by the UEa in the PUSCH transmission previously performed in an SC-FDMA multiplexing mode are transmitted in a CDM mode, the transmitter a preferably configures a CDM mode for the UEa to perform PUSCH transmission on the physical resource of the highly interfering signal.
  • Step 102 Configure a resource area for the signals transmitted in a CDM mode, or negotiate with the neighboring cell to configure a resource area for the signals transmitted in the CDM mode.
  • the transmitter may configure a resource area for the signals transmitted in a CDM mode according to part or any combination of the following information:
  • the overlapping resources of the PUSCH resources of the cell and the PUCCH resources of the neighboring cell refer to the overlap part of the PUSCH resource configuration of the cell and the PUCCH resource configuration of the neighboring cell.
  • the resource area may be determined according to the CDM resource configuration information.
  • the CDM resource configuration information includes: size of the configured or negotiated physical resource and/or location of the physical resource.
  • the size of the physical resource may include: number of the physical resource blocks and/or number of subcarriers.
  • the location of the physical resource may include: location of the subcarrier, and/or location of the physical resource block, and/or subband location, and/or location of the subframe for transmitting the physical resource, and/or period of configuring the physical resource, and/or frequency hopping pattern of the physical resource.
  • FIG. 2 is a schematic diagram of negotiation between a cell (cell 1 ) and a neighboring cell (cell 2 ) as regards how to configure a resource area for signals transmitted in a CDM mode.
  • the cell based on the distribution of interference experienced by the cell and the neighboring cell as well as the load state of the cell and the neighboring cell, the cell negotiates with the neighboring cell to configure physical resource block 2 (PRB 2 ) and physical resource block 3 (PRB 3 ) as the CDM resource area of the signals transmitted in the CDM mode; the transmitter transmits data in a CDM mode in the foregoing resource area.
  • the receiver is invoked by data in the foregoing resource area, the receiver decodes the data in a CDM mode in the foregoing resource area.
  • FIG. 3 is a schematic diagram of negotiation between a cell and a neighboring cell as regards how to configure another resource area for signals transmitted in a CDM mode.
  • the cell (cell 2 ) and the neighboring cell (cell 1 ) negotiate to configure overlapping resources as a resource area of transmitting signals in a CDM mode, where the overlapping resources are an overlap between the PUSCH resources of the cell and the PUCCH resources of the neighboring cell.
  • the uplink data is transmitted in a CDM mode on the same physical resource as the PUCCH format 2 / 2 a / 2 b .
  • the spectrum spreading may be performed for the uplink data according to an uplink ACK/NACK time-frequency 2-dimensional spreading mode of the LTE system, and then the uplink data is transmitted in a CDM mode on the same physical resource as the PUCCH format 1 / 1 a / 1 b.
  • Step 103 Transmit CDM resource configuration information implicitly or explicitly.
  • the location of physical resource in the CDM resource configuration information and/or the size of the physical resource may be known to the transmitter and the receiver beforehand, or indicated by the transmitter explicitly through bits or fields.
  • bits or fields may indicate the location and/or size of the physical resource in a continuous resource allocation mode of the LTE system, or in a discontinuous resource allocation mode, or in a bitmap allocation mode.
  • the CDM resource configuration information may be transmitted implicitly. If the content of the CDM resource configuration information is indicated by the transmitter through bits or fields explicitly, the CDM resource configuration information may be transmitted in an explicit mode such as physical broadcast channel (PBCH), or dynamic broadcast channel (DBCH), or RRC dedicated signaling, or physical layer control channel.
  • PBCH physical broadcast channel
  • DBCH dynamic broadcast channel
  • RRC dedicated signaling or physical layer control channel.
  • the transmitter may transmit the CDM resource configuration information through broadcast; when few signals of the cell need to be transmitted in the CDM mode, the transmitter may transmit the CDM resource configuration information through a dedicated signaling.
  • Step 104 Notify the receiver of the multiplexing mode of the signals to be transmitted by the cell.
  • the notification modes include:
  • PDCCH physical downlink control channel
  • RRC radio resource control
  • 1 bit may be added in the information over the PDCCH to indicate whether the CDM mode or the second multiplexing mode is applied to the PDSCH or PUSCH transmission.
  • the state of the added 1 bit is 0, it indicates that a CDM mode is applied to the PDSCH or PUSCH transmission; when the state of the added 1 bit is 1, it indicates that a second multiplexing mode is applied to the PDSCH or PUSCH transmission.
  • a redundant field or redundant state in the information over the PDCCH is used to indicate whether a CDM mode or a second multiplexing mode is applied to the PDSCH or PUSCH transmission.
  • redundant padding bits exist in the PDCCH designed for uplink scheduling.
  • the padding bits may serve to indicate whether the CDM mode or the second multiplexing mode is applied to the PUSCH transmission. Supposing that there is 1 padding bit, when the state of the padding bit is 0, it indicates that the CDM mode is applied to the PUSCH transmission, and, when the state of the padding bit is 1, it indicates that the second multiplexing mode is applied to the PUSCH transmission. In another example, it is stipulated that the hopping transmission of the PUSCH is disabled when discontinuous resource allocation is applied, and therefore, the hopping transmission indication bit (hopping bit) may serve to indicate whether the CDM mode or the second multiplexing mode is applied to the PUSCH transmission.
  • the redundant state or the redundant bit of the CIF field may serve to indicate whether the CDM mode or the second multiplexing mode is applied to the PDSCH or PUSCH transmission. If the length of the CIF field is 3 bits, and the number of carriers in the carrier set configured by the transmitter for the receiver is less than or equal to 4, the 2 bits in the CIF are still used to indicate the carrier index, and the other 1 bit in the CIF is used to indicate whether the CDM mode or the second multiplexing mode is applied to the PDSCH or PUSCH transmission.
  • CIF Carrier Index Indicator
  • implicit information may be used to indicate whether the CDM mode or the second multiplexing mode is applied to the PDSCH or PUSCH transmission.
  • different scrambled codes of the cyclic redundancy check bits of the PDCCH are used to indicate whether the CDM mode or the second multiplexing mode is applied to the PDSCH or PUSCH transmission. For example, if the receiver uses scrambled code 1 to detect the physical downlink control channel correctly, the receiver believes that the CDM mode is applied to the PDSCH or PUSCH transmission; if the receiver uses scrambled code 2 to detect the physical downlink control channel correctly, the receiver believes that the second multiplexing mode is applied to the PDSCH or PUSCH transmission.
  • the multiplexing mode of the signals to be transmitted by the cell may be notified implicitly according to the information on the resource area of the signals to be transmitted by the cell. For example, after the transmitter broadcasts the CDM resource configuration information, if the CDM resource area indicated in the broadcast CDM resource configuration information includes the PDSCH or PUSCH scheduling resources allocated by the transmitter to a specific receiver, the receiver believes that the CDM mode is applied to the PDSCH or PUSCH transmission.
  • a new information element may be added into an RRC dedicated signaling to indicate whether the CDM mode or the second multiplexing mode is applied to the PDSCH or PUSCH transmission.
  • certain states in a modulation and coding scheme (MCS) field may be used to indicate whether the CDM mode or the second multiplexing mode is applied to the PDSCH or PUSCH transmission.
  • MCS modulation and coding scheme
  • the field indicates that the CDM mode is applied. If the Imes indicated in the MCS field in the PDCCH of the receiver belongs to the set ⁇ 3, 8, 18, 19 ⁇ , the receiver knows that the CDM mode is applied to the downlink PDSCH transmission or the uplink PUSCH transmission.
  • the Imes set for indicating the CDM mode above is illustrative only. In fact, the transmitter may configure any Imes set for indicating the CDM mode applied to transmission.
  • Step 106 Configure a spread spectrum code for the signals transmitted in the CDM mode, or negotiate with the neighboring cell to configure a spread spectrum code for the signals transmitted in the CDM mode, or negotiate with the neighboring cell to configure code resources for the signals transmitted in the CDM mode, where the code resources are available to the cell and the neighboring cell.
  • the code index here may be a code index of a spread spectrum code in a spread spectrum code set available to the transmitter, or a cyclic shift value of a specific spread spectrum sequence, or an index indicating a cyclic shift value of a specific spread spectrum sequence, or another index indicating the spread spectrum sequence.
  • the transmitter may decide the code length and code index used for the signals to be transmitted by the cell in the CDM mode.
  • the transmitter may negotiate with the neighboring cell to configure a spread spectrum code for the signals transmitted in the CDM mode, or negotiate with the neighboring cell to configure code resources for the signals transmitted in the CDM mode, where the code resources are available to the cell and the neighboring cells.
  • the code used for the signals transmitted by the cell in the CDM mode is orthogonal to, or scarcely cross-correlated with, the code used for the signals transmitted by the neighboring cell in the CDM mode, and thus the inter-cell interference is suppressed.
  • FIG. 4 is a schematic diagram of negotiation between two macro cells and the Pico cells covered in the two macro cells as regards how to configure available code resources for signals transmitted in a CDM multiplexing mode.
  • the code resources used by macro cell 1 may keep orthogonal (or quasi-orthogonal) to the code resources of the Pico cell under macro cell 2 and/or macro cell 1 .
  • the code resource coordination information is transmitted between different cells through an X2 interface or an air interface.
  • the code resource coordination information includes configurable codes or code index set, and/or configured codes or code index set, and/or unconfigured code or code index set, and/or spread spectrum code length information, and/or spread spectrum code features that include information such as spread spectrum code type and base sequence of the spread spectrum code.
  • An RRC dedicated signaling or an information field in the PDCCH indicates a spread spectrum code index configured for the signals transmitted in a CDM mode.
  • a new information element (information element) may be added into an RRC dedicated signaling to indicate the code index used when a CDM mode is applied to the downlink PDSCH or the uplink PUSCH transmission.
  • the transmitter may configure the code index used for uplink PUSCH CDM multiplexing for the receiver, or add a new field in the PDCCH to indicate the code index used for the uplink PUSCH CDM multiplexing.
  • Step 107 Through the configured spread spectrum code index, determine a physical hybrid indication channel (PHICH) index corresponding to the physical uplink shared channel (PUSCH) that transmits signals in a CDM mode.
  • PHICH physical hybrid indication channel
  • n PHICH group ( I PRB _ RA lowest _ index +n DMRS )mod N PHICH group +I PHICH N PHICH group
  • n PHICH seq ( ⁇ I PRB _ RA lowest _ index /N PHICH group ⁇ +n DMRS )mod 2 N SF PHICH
  • n PHICH group is an index group number parameter
  • n PHICH seq is an index sequence number parameter
  • N SF PHICH is a spreading factor
  • I PRB _ RA lowest _ index is the lowest marked index of the PRB occupied for transmitting the uplink data transmission block
  • n DMRS is the value of n-DMRS
  • N PHICH group is the number of PHICH groups reserved for the current uplink carrier by the downlink carrier correlated with the current uplink carrier
  • I PHICH is set to 1 when the uplink and downlink subframe of the TDD system is set to 0 and the uplink data block is transmitted in the 5th or 10th subframe, and is set to 0 in other circumstances.
  • the transmitter needs to set different n-DMRS values so that the PHICH index varies between the receivers performing the CDM multiplexing on the same resource. In fact, setting different n-DMRS values does not completely avoid conflict of the PHICH index. Therefore, to perform PHICH mapping more flexibly, as shown in the following formula, the index and cw of the configured CDM code may be introduced into the determining of the PHICH index.
  • cw is the index of the configured CDM code
  • NPRB is the total number of PRBs on the uplink carrier that carries the current uplink data block.
  • the step of transmitting the signals to be transmitted by the cell according to the multiplexing mode of the signals to be transmitted by the cell may include: the cell and the neighboring cell perform joint spectrum spreading according to the multiplexing mode of the signals to be transmitted by the cell to transmit the signals to be transmitted by the cell.
  • the cell and the neighboring cell may perform joint spread spectrum data transmission for the data of the same receiver.
  • macro eNB 1 the cell
  • macro eNB 2 neighboreNB 2
  • FIG. 5 macro eNB 1 and macro eNB 2 use different codes to spread spectrum for the same data stream of UE 1 respectively, and UE 1 receives data transmitted by macro eNB 1 and macro eNB 2 simultaneously to improve data transmission reliability.
  • macro eNB 1 and macro eNB 2 may use different codes to spread spectrum for different data streams of UE 1 respectively, and UE 1 receives the data transmitted by macro eNB 1 and macro eNB 2 simultaneously to improve data transmission efficiency.
  • the step of transmitting the signals to be transmitted by the cell according to the multiplexing mode of the signals to be transmitted by the cell may further include: performing data transmission in a CDM mode on a backhaul link. If the channel quality of the backhaul link is high, to boost the transmission capacity of the backhaul link, data may be transmitted in a CDM mode on the backhaul link.
  • data may be transmitted in a CDM mode on the backhaul link.
  • how to indicate the CDM mode in the case of transmitting data in the CDM mode how to determine the resource area when the CDM mode is applied, how to configure the code resource, and how to indicate the code index, the foregoing steps may serve as a reference.
  • the multiplexing mode is selected adaptively according to the interference strength. Therefore, the inter-cell interference is reduced, the reliability of channel detection is improved, the system complexity is reduced, and the cost is saved. Further, through a configuration step and a notification step, the process of the adaptive selection is more flexible. Through joint spread spectrum transmission, the data receiving reliability is improved, and the resource multiplexing efficiency is improved.
  • FIG. 6 is a schematic diagram of another signal transmission method according to an embodiment of the present invention.
  • the method in this embodiment comprises:
  • Step 601 Obtain a multiplexing mode of signals transmitted by a transmitter and to be transmitted by a cell.
  • Step 602 Receive the signals to be transmitted by the cell according to the multiplexing mode of the signals to be transmitted by the cell.
  • the entity for performing this embodiment is a receiver, for example, an eNodeB, or macro eNodeB, or relay node, or Pico eNodeB, or home eNodeB, or user equipment (UE).
  • the receiver in this embodiment is designed to work together with the transmitter described in the embodiment shown in FIG. 1 .
  • the receiver in this embodiment obtains a multiplexing mode of signals transmitted by a transmitter and to be transmitted by a cell first. In this way, as indicated, when the interference strength is high, a multiplexing mode strongly resistant against interference can be selected; when the interference strength is low, a multiplexing mode less resistant against interference can be selected. After the multiplexing mode is obtained, the receiver can receive the signals to be transmitted according to the multiplexing mode.
  • the mode of obtaining the multiplexing mode of the signals transmitted by the transmitter and to be transmitted by the cell may comprise:
  • RRC radio resource control
  • Step 603 Obtain the CDM resource configuration information, and determine the resource area that uses the CDM mode for transmission according to the obtained CDM resource configuration information.
  • signals can be transmitted according to the multiplexing mode selected by the transmitter. Therefore, the inter-cell interference is reduced, the reliability of channel detection is improved, the system complexity is reduced, and the cost is saved.
  • FIG. 7 is a schematic diagram of a signal transmission device according to an embodiment of the present invention.
  • the transmission device in this embodiment comprises:
  • a selecting module 701 configured to select a multiplexing mode of signals to be transmitted by a cell according to interference strength experienced by the cell and/or interference strength experienced by a neighboring cell;
  • a notifying module 702 configured to notify a receiver of the multiplexing mode of the signals to be transmitted by the cell
  • a transmission module 703 configured to transmit the signals to be transmitted by the cell according to the multiplexing mode of the signals to be transmitted by the cell.
  • the transmission device in this embodiment is applicable to the method illustrated in FIG. 1 , and is not repeated here any further.
  • CDM code division multiplexing
  • SC-FDMA single carrier frequency division multiple access
  • FDM frequency division multiplexing
  • TDM time division multiplexing
  • the multiplexing mode of the signals to be transmitted by the cell notify, on the physical downlink control channel (PDCCH), the multiplexing mode of the signals to be transmitted by the cell; or notify implicitly the multiplexing mode of the signals to be transmitted by the cell according to different scrambled codes of the cyclic redundancy check bits of the PDCCH or the information on the resource area of the signals to be transmitted by the cell; or
  • PDCCH physical downlink control channel
  • RRC radio resource control
  • the transmission device in this embodiment may further comprise a configuration module 704 , which is configured to set a resource area for the signals transmitted in a CDM mode, or negotiate with the neighboring cell to configure a resource area for the signals transmitted in the CDM mode.
  • a configuration module 704 which is configured to set a resource area for the signals transmitted in a CDM mode, or negotiate with the neighboring cell to configure a resource area for the signals transmitted in the CDM mode.
  • the transmission device in this embodiment may further comprise an indicating module 705 , which is configured to transmit CDM resource configuration information implicitly or explicitly.
  • the transmission device in this embodiment may further comprise a code configuring module 706 , which is configured to set a spread spectrum code for the signals transmitted in the CDM mode, or negotiate with the neighboring cell to configure a spread spectrum code for the signals transmitted in the CDM mode, or negotiate with the neighboring cell to configure code resources for the signals transmitted in the CDM mode, where the code resources are available to the cell and the neighboring cell.
  • a code configuring module 706 which is configured to set a spread spectrum code for the signals transmitted in the CDM mode, or negotiate with the neighboring cell to configure a spread spectrum code for the signals transmitted in the CDM mode, or negotiate with the neighboring cell to configure code resources for the signals transmitted in the CDM mode, where the code resources are available to the cell and the neighboring cell.
  • the transmission device in this embodiment may further comprise a determining module 707 , which is configured to: through the configured spread spectrum code index, determine a physical hybrid indication channel (PHICH) index corresponding to the physical uplink shared channel (PUSCH) that transmits signals in a CDM mode.
  • a determining module 707 which is configured to: through the configured spread spectrum code index, determine a physical hybrid indication channel (PHICH) index corresponding to the physical uplink shared channel (PUSCH) that transmits signals in a CDM mode.
  • PHICH physical hybrid indication channel
  • the multiplexing mode is selected adaptively according to the interference strength. Therefore, the inter-cell interference is reduced, the reliability of channel detection is improved, the system complexity is reduced, and the cost is saved. Further, through a configuration module and an indicating module, the process of the adaptive selection is more flexible. Through joint spread spectrum transmission, the data receiving reliability is improved, and the resource multiplexing efficiency is improved.
  • FIG. 8 is a schematic diagram of another signal transmission device according to an embodiment of the present invention.
  • the transmission device in this embodiment comprises:
  • an obtaining module 801 configured to obtain a multiplexing mode of signals transmitted by a transmitter and to be transmitted by a cell;
  • a receiving module 802 configured to receive the signals to be transmitted by the cell according to the multiplexing mode of the signals to be transmitted by the cell.
  • the transmission device in this embodiment is applicable to the method illustrated in FIG. 6 , and is not detailed here any further.
  • RRC radio resource control
  • a resource configuration information obtaining module 803 configured to obtain CDM resource configuration information, and determine the resource area that uses the CDM mode for transmission according to the obtained CDM resource configuration information.
  • signals can be transmitted according to the multiplexing mode selected by the transmitter. Therefore, the inter-cell interference is reduced, the reliability of channel detection is improved, the system complexity is reduced, and the cost is saved.
  • FIG. 9 is a schematic diagram of a signal system according to an embodiment of the present invention.
  • the system in this embodiment comprises:
  • the signal transmission system in this embodiment is applicable to the methods illustrated in FIG. 1 and FIG. 5 , and is not detailed here any further.
  • the multiplexing mode is selected adaptively according to the interference strength. Therefore, the inter-cell interference is reduced, the reliability of channel detection is improved, the system complexity is reduced, and the cost is saved.
  • the software product is stored in computer-readable storage media such as computer floppy disk, hard disk and CD-ROM, and contains instructions for instructing a computer device (for example, personal computer, server, or network device) to execute the method specified in any embodiment of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
US13/671,283 2010-05-07 2012-11-07 Method, device and system for signal transmission Active 2031-05-22 US9363706B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201010172893 2010-05-07
CN201010172893.XA CN102237928B (zh) 2010-05-07 2010-05-07 一种信号的传输方法、装置和系统
CN201010172893.X 2010-05-07
PCT/CN2011/073734 WO2011137754A1 (zh) 2010-05-07 2011-05-06 一种信号的传输方法、装置和系统

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/073734 Continuation WO2011137754A1 (zh) 2010-05-07 2011-05-06 一种信号的传输方法、装置和系统

Publications (2)

Publication Number Publication Date
US20130064204A1 US20130064204A1 (en) 2013-03-14
US9363706B2 true US9363706B2 (en) 2016-06-07

Family

ID=44888202

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/671,283 Active 2031-05-22 US9363706B2 (en) 2010-05-07 2012-11-07 Method, device and system for signal transmission

Country Status (4)

Country Link
US (1) US9363706B2 (de)
EP (1) EP2568717B1 (de)
CN (1) CN102237928B (de)
WO (1) WO2011137754A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8737252B2 (en) 2012-03-28 2014-05-27 Qualcomm Incorporated Method and apparatus for multicarrier coverage diversity
JP6042127B2 (ja) * 2012-07-25 2016-12-14 株式会社Ｎｔｔドコモ 移動端末装置及び基地局装置
CN103944841B (zh) * 2013-01-17 2017-03-08 展讯通信（上海）有限公司 正交频分复用系统中信道估计方法及其装置
CN104811406B (zh) * 2015-05-05 2018-01-12 华为技术有限公司 物理上行共享信道解调方法和装置
US10560229B2 (en) 2015-06-17 2020-02-11 Apple Inc. ACK/NACK signals for next generation LTE devices and systems
CN106357579B (zh) * 2015-07-17 2020-02-18 中兴通讯股份有限公司 一种正交频分复用系统频谱资源的使用方法及相应的基站
CN108737010B (zh) * 2017-04-19 2024-04-30 中兴通讯股份有限公司 一种信息交互的方法及装置
CN108882243A (zh) * 2017-05-10 2018-11-23 索尼公司 用于无线通信系统的电子设备、方法和存储介质
CN109150447B (zh) 2017-06-16 2022-09-27 中兴通讯股份有限公司 信息发送、数据解调方法及装置、通信节点、网络侧设备
CN109391394B (zh) * 2017-08-09 2021-07-27 北京紫光展锐通信技术有限公司 Prg隐式指示方法及装置、存储介质、终端、基站
CN109525361B (zh) * 2017-09-20 2020-11-06 中国移动通信有限公司研究院 控制信息的传输方法、接收方法、基站及终端
CN109302746B (zh) 2017-11-17 2019-11-01 华为技术有限公司 检测窗指示方法及装置
US11617162B2 (en) 2018-07-20 2023-03-28 Lg Electronics Inc. V2X operation method based on TTI bundling in wireless communication system, and terminal using method
EP4211821A1 (de) * 2020-09-14 2023-07-19 Telefonaktiebolaget LM Ericsson (publ) Verfahren zur bestimmung der fähigkeit des gleichzeitigen betriebs in iab-knoten

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5245629A (en) 1991-10-28 1993-09-14 Motorola, Inc. Method for compensating for capacity overload in a spread spectrum communication system
WO1999065158A1 (de) 1998-06-10 1999-12-16 Siemens Aktiengesellschaft Verfahren zur aufrechterhaltung einer betriebsbedingung eines mobilfunksystems, mobilstation und basisstation
US20020181491A1 (en) 1999-12-09 2002-12-05 Alexander Mircescu Dynamic selection of a medium access method in communication networks
US20040141481A1 (en) 2002-11-01 2004-07-22 Kddi Corporation Transmitter device and transmitting method using OFDM nd MC-CDMA
US20050018642A1 (en) 2002-02-28 2005-01-27 Fujitsu Limited Communications device used in CDMA
EP1976155A1 (de) 2006-01-17 2008-10-01 NTT DoCoMo, Inc. Basisstation und downstream-verbindungskanalübertragungsverfahren
US20090010228A1 (en) * 2005-09-07 2009-01-08 Datang Mobile Communications Equipment Co., Ltd. Method for Restraining Cross-Slot Interference in Slot Cdma System
CN101364832A (zh) 2007-08-08 2009-02-11 中兴通讯股份有限公司 空分复用和码分复用的自适应切换方法
US20090196245A1 (en) * 2008-02-01 2009-08-06 Qualcomm Incorporated Virtual scheduling in heterogeneous networks
US20100008230A1 (en) * 2008-07-11 2010-01-14 Qualcomm Incorporated Access mechanisms for base stations in heterogeneous access point networks
US20110096745A1 (en) * 2008-10-30 2011-04-28 Joon Kui Ahn Method of transmitting signal in wireless communication system and apparatus thereof

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5245629A (en) 1991-10-28 1993-09-14 Motorola, Inc. Method for compensating for capacity overload in a spread spectrum communication system
WO1999065158A1 (de) 1998-06-10 1999-12-16 Siemens Aktiengesellschaft Verfahren zur aufrechterhaltung einer betriebsbedingung eines mobilfunksystems, mobilstation und basisstation
US20020181491A1 (en) 1999-12-09 2002-12-05 Alexander Mircescu Dynamic selection of a medium access method in communication networks
CN1409906A (zh) 1999-12-09 2003-04-09 西门子公司 在通信网内动态地选择媒质访问方法
US20050018642A1 (en) 2002-02-28 2005-01-27 Fujitsu Limited Communications device used in CDMA
US20040141481A1 (en) 2002-11-01 2004-07-22 Kddi Corporation Transmitter device and transmitting method using OFDM nd MC-CDMA
US20090010228A1 (en) * 2005-09-07 2009-01-08 Datang Mobile Communications Equipment Co., Ltd. Method for Restraining Cross-Slot Interference in Slot Cdma System
EP1976155A1 (de) 2006-01-17 2008-10-01 NTT DoCoMo, Inc. Basisstation und downstream-verbindungskanalübertragungsverfahren
CN101364832A (zh) 2007-08-08 2009-02-11 中兴通讯股份有限公司 空分复用和码分复用的自适应切换方法
US20090196245A1 (en) * 2008-02-01 2009-08-06 Qualcomm Incorporated Virtual scheduling in heterogeneous networks
US20100008230A1 (en) * 2008-07-11 2010-01-14 Qualcomm Incorporated Access mechanisms for base stations in heterogeneous access point networks
US20110096745A1 (en) * 2008-10-30 2011-04-28 Joon Kui Ahn Method of transmitting signal in wireless communication system and apparatus thereof

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
1st Office Action in corresponding Chinese Patent Application No. 201010172893.X (Jun. 3, 2013).
Extended European Search Report in corresponding European Patent Application No. 11777175.8 (Apr. 17, 2013).
International Search Report in corresponding PCT Patent Application No. PCT/CN2011/073734 (Aug. 11, 2011).
Written Opinion of the International Searching Authority in corresponding PCT Patent Application No. PCT/CN2011/073734 (Aug. 11, 2011).

Also Published As

Publication number Publication date
EP2568717A4 (de) 2013-05-15
CN102237928A (zh) 2011-11-09
EP2568717B1 (de) 2018-03-21
US20130064204A1 (en) 2013-03-14
EP2568717A1 (de) 2013-03-13
WO2011137754A1 (zh) 2011-11-10
CN102237928B (zh) 2014-11-19

Similar Documents

Publication Publication Date Title
US9363706B2 (en) Method, device and system for signal transmission
EP3824661B1 (de) Verbesserte rrm-messung für unlizenziertes spektrum
US10855419B2 (en) Terminal device, base station device, and method
US9693347B2 (en) Method and device for receiving or transmitting downlink control signal in wireless communication system
JP6843043B2 (ja) 端末装置、基地局装置、および通信方法
US10638464B2 (en) System and method for transmission and reception of control channels in a communications system
CA2994096C (en) Terminal device, base station device, and communication method
KR101624813B1 (ko) 업링크 제어 시그널링을 위한 방법 및 장치
EP3297362B1 (de) Endgerätevorrichtung, basisstationsvorrichtung und kommunikationsverfahren
US20160182203A1 (en) Reference signals in wireless communication
CN104471999B (zh) 上行控制信息的发送方法和装置
US20130089051A1 (en) Method and apparatus for data transmission in radio network
JP2015518305A (ja) 拡張型物理ダウンリンクリンク制御チャネルのサーチスペースの設定方法
EP3382921B1 (de) Endgerätevorrichtung, basisstationsvorrichtung und kommunikationsverfahren
EP3817426A1 (de) Kommunikationsvorrichtung und kommunikationsverfahren
JP2022528104A (ja) 非免許帯域で送信を行うためのリソース割り当て方法及びこれを用いる装置
CN103748821B (zh) 上行控制信息的发送方法和装置
WO2015064367A1 (ja) ユーザ端末及び端末間通信方法
KR20190051730A (ko) 단말과 기지국 간 데이터 전송을 위한 다중화 방법과 그에 따른 제어신호의 전송 및 수신방법, 장치 및 시스템
KR20180108351A (ko) 비면허대역 통신을 위한 다양한 dl전송 구조하에서의 데이터/제어채널의 할당 및 수신 방법, 장치 및 시스템

Legal Events

Date Code Title Description
AS Assignment

Owner name: HUAWEI TECHNOLOGIES CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SUN, LIXIN;WAN, LEI;XUE, LIXIA;AND OTHERS;SIGNING DATES FROM 20121102 TO 20121105;REEL/FRAME:029258/0608

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 4

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 8